The Ontario long range forecast indicates an extreme heatwave, with daytime highs soaring to 40°, well above the seasonal norm and 10.5 °C higher than the historical average.
Select a month and click on a day for more information:
Wednesday
Apr 1
25° / 14°
Thursday
Apr 2
21° / 9°
Friday
Apr 3
19° / 8°
Saturday
Apr 4
20° / 7°
Sunday
Apr 5
21° / 8°
Monday
Apr 6
24° / 9°
Tuesday
Apr 7
24° / 11°
Wednesday
Apr 8
24° / 12°
Thursday
Apr 9
28° / 11°
Friday
Apr 10
27° / 15°
Saturday
Apr 11
25° / 13°
Sunday
Apr 12
22° / 11°
Monday
Apr 13
18° / 8°
Tuesday
Apr 14
18° / 7°
Wednesday
Apr 15
20° / 7°
Thursday
Apr 16
22° / 10°
Friday
Apr 17
22° / 11°
Saturday
Apr 18
23° / 11°
Sunday
Apr 19
24° / 12°
Monday
Apr 20
24° / 13°
Tuesday
Apr 21
24° / 11°
Wednesday
Apr 22
22° / 10°
Thursday
Apr 23
22° / 10°
Friday
Apr 24
22° / 9°
Saturday
Apr 25
21° / 10°
Sunday
Apr 26
20° / 10°
Monday
Apr 27
23° / 11°
Tuesday
Apr 28
25° / 10°
Wednesday
Apr 29
28° / 13°
Thursday
Apr 30
27° / 14°
Ontario 30 days weather forecast
Check out our estimated 30 days weather forecast for Ontario, this data is based on the average weather in Ontario in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Ontario next to the desired date.